JPS62243012A - Hot water mixing device - Google Patents

Abstract

PURPOSE:To exactly stop a supply of mixed hot water at the time of service interruption, by providing an auxiliary power source used for the time of service interruption, against a power source of an electrical driving means for driving a flow rate control valve. CONSTITUTION:Mixed hot water is supplied to a hot-water supply object by mixing to a suitable temperature by a mixing valve 11, and also, a start and a stop of an adjustment of a flow rate and a supply of the mixed hot water are executed by a flow rate control valve 19. This flow rate control valve 19 is brought to an opening/closing control by a flow rate control valve motor 22 being an electrical driving means. Also, a temperature of the mixed hot water is adjusted to a desired value in accordance with a temperature which has been set by a setting device 23. At the time of service interruption, a charge of a capacitor 26 being an auxiliary power source is supplied to the motor 22 instead of a power source 27, and the control valve 19 is closed. In this way, at the time of service interruption, a supply of the mixed hot water can be exactly stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing device for hot water supply that mixes hot water and water to obtain an appropriate temperature and controls the amount of mixed hot water supplied.

2. Description of the Related Art Conventionally, as a device related to this type of hot water mixing device, the second
There was something like the one shown in the figure. (For example, Jikko Sho 61-2
No. 438) The water supplied from the water supply channel 1 is supplied through the solenoid valve 2.
Water is then supplied to the target.

A flow rate detection means 3 is provided in the middle of the water supply channel 1 to detect a water flow rate and output a flow rate signal corresponding to the water flow rate. When you set the flow rate integrated value you want to obtain with the setting device 4 and start water supply, the flow rate detected by the flow rate detection means 3 is integrated by the controller 5, and when it reaches the flow rate integrated value set with the setting device 4, , the solenoid valve 2 is closed to fill the bathtub with a predetermined amount of water.

Electricity used for these controls is supplied from a power source 6.

Problems to be Solved by the Invention However, the above configuration has the following problems.

(1) Since only water could be supplied, it was necessary to boil the bath to the appropriate temperature in a bathtub, which was inconvenient and time consuming.

(2) In the event of a power outage, water supply will be stopped if the solenoid valve is closed when the power is off, but water may continue to flow if the solenoid valve is opened when the power is off. .

(3) Since it was a solenoid valve, it was possible to open and close it, but it was not possible to arbitrarily adjust the flow rate.

(4) In areas with high water pressure, water hammer occurred when the solenoid valve was opened.

In order to eliminate water hammer in solenoid valves, there was a so-called pilot-type solenoid valve that connected a valve to a diaphragm and controlled the water flowing through pores, but the pores became clogged with steel components in the water. It had some drawbacks that would disappear. Electrically operated valves using motors have been considered as a means of solving the problems of arbitrary flow rate adjustment, water hammer, and reliability of these electromagnetic valves, but the drawback of not operating during a power outage still remains.

SUMMARY OF THE INVENTION The present invention aims to solve these conventional problems and provides a hot water mixing device that can reliably stop the supply of mixed hot water in the event of a power outage.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention has the following features:
A mixing valve that adjusts the mixing ratio of hot water and water, a flow control valve that adjusts the mixing flow rate, an electric drive means that drives the flow control valve, and a setting device that instructs the electric drive means to control the flow rate. , a power supply that supplies electricity, an auxiliary power supply that supplies electricity in place of the power supply when the power supply fails, and a controller that closes the flow control valve using the auxiliary power supply when the power supply fails.

Effect of the Invention With the above-described configuration, the mixing valve mixes the mixed hot water at an appropriate temperature and supplies the mixed hot water to the hot water supply target, and the flow rate control valve adjusts the flow rate of the mixed hot water and starts and stops the supply. When there is a power outage to the electric drive means that drives the water supply, the auxiliary power supply controls the flow rate control valve to close, thereby stopping hot water supply.

Example Embodiments of the present invention will be described below based on the accompanying drawings.

The hot water and water supplied through the hot water flow path 7 and the water flow path 8 are equalized in hot water pressure and water pressure by a pressure balance valve 10 provided in a valve frame 9, and then flow into a mixing valve 11. The mixing valve 11 is configured such that a hot water side valve body 12 and a water side valve body 13 are interlocked with the operation of a shaft 14 to change the mixing ratio of hot water and water in inverse proportion. The shaft 14 is driven by a mixing valve motor 15, which is an externally provided electric drive means, via a linear motion conversion mechanism 16.

The temperature of the mixed hot water is detected by a thermistor 17, and the mixed hot water passes through a flow rate sensor 18 that detects the flow rate of the mixed hot water, a flow rate control valve 19, a mixed hot water flow path 20, and is supplied from a faucet 21 to the hot water supply target. Ru. Flow control valve 19 is also driven by flow control valve motor 22 . Near the faucet 21,
A setting device 23 is provided for setting the mixed water temperature, the mixed flow rate, the integrated value of the mixed flow rate, and the like. The mixing valve motor 15 and the flow rate lighting key are controlled so that various setting values set by the setting device 23 can be obtained by changing the flow rate and lighting keys. Now, the case 25 houses a capacitor 26 which is an auxiliary power supply, and when the power supply 27 is out of power, the charged capacitor 26 works to connect the mixing/flow controller 24, the mixing valve motor 15, the flow control valve motor 22, etc. Power is supplied. 28 is a telephone which is a setting device for instructing control from the outside.

Note that the condenser 26 is kept warm by heat radiation from the mixing part of the mixing valve 11 and the hot water flow path, and is designed to have a sufficient amount of charge.

In the above configuration, when the desired mixed water temperature, mixed flow rate, etc. to be obtained are set using the setting device 23 and an instruction is given to start hot water supply, the flow rate control valve 19 is opened by the flow rate control valve motor 22 via the mixing/flow rate controller 24. Then, the flow of hot water and water starts, and at the same time, the mixing valve 11 starts adjusting the mixing ratio of hot water and water. To adjust the mixing ratio, the set value of the mixing water temperature in the setting device 23 is compared with the mixing water temperature detected by the thermistor 17, and the mixing/flow rate controller 24, and the mixing valve motor 15 adjusts the mixing valve to obtain the appropriate temperature. 11 is activated.

In addition, the flow rate control valve 19 uses the signal of the flow rate sensor 18 to obtain the mixing flow rate of the setting device 23.
The flow rate controller 24 controls the flow rate control valve morph 22 and also performs flow rate adjustment. Electricity is supplied from a power source 27 to the mixing valve motor 15, mixing/flow rate controller 24, and the like. When the power supply from the power source 27 is stopped during a power outage, the electricity that had been charged by the function of the capacitor 26 is supplied, and the flow rate control valve 19 is closed by the mixing/flow rate controller 24, and the operation of the mixing valve 11 is stopped. control is performed.

Therefore, even if a power outage occurs while a bathtub is being filled with hot water by specifying an integrated flow rate value using the setter 23, there is no risk of the hot water overflowing, and the supply of mixed hot water will be stopped. The hot water supply is stopped by operating the flow control valve motor 22 slowly within a range that does not cause water hammer. Also,
The flow rate is adjusted using the signal from the flow rate sensor 18.
The flow rate can be arbitrarily adjusted using the flow rate setting device 23. Since the mixing ratio of hot water and water can be arbitrarily changed using the mixing valve 11, when filling a bathtub with hot water, it is possible to obtain a temperature at which the bather can take a bath immediately after the hot water supply is finished. In addition, a so-called telecommand function allows you to start hot water supply and set the mixed water temperature by giving commands using the telephone 29 when you go out, and when you return home, the bathtub is filled with hot water in a predetermined amount and at a predetermined temperature. can also be accomplished. Note that when the mixing valve 11 fails, the therminutor 17 detects an abnormality and the flow rate control valve 19 stops the hot water supply, and conversely, when the flow rate control valve 19 fails.

It is also possible to perform quite complementary control, such as changing supplied hot water to water using the mixing valve 11 to prevent wasteful energy release.

In this embodiment, a capacitor is used as an auxiliary power source, but a battery may also be used. Moreover, although the mixing valve is of a type independent of the flow control valve, it may be a so-called two-pulp type mixing/flow control valve in which flow control valves are provided on the hot water side and the water side, respectively. Furthermore, although the mixing valve is electrically controlled, the purpose of the invention can also be achieved with a mechanical mixing valve such as a wax thermostat or a bimetallic mixing valve whose temperature is controlled.

As an effect of this embodiment, the capacitor 26 is used as an auxiliary power source.
By using a flow rate control valve motor 22 as an electric drive means, it is possible to adjust the flow rate of the mixed hot water, and the water The ability to prevent hammers,
Since the mixing valve 11 is electrically controlled, only a light operating force is required, and wasteful release of energy can be prevented in the event of a failure of the flow rate control valve 19.

Effects of the invention (1) Since the water supply temperature can be adjusted using the mixing valve, hot water at the desired temperature can be obtained immediately, and even if the water is still being supplied to the bathtub, there is no need to boil it in the bathtub, which saves time.

(2) In the event of a failure of the mixing valve, hot water supply can be stopped using the flow control valve to prevent danger and wasteful energy consumption.

(3) In the event of a power outage, the supply of mixed hot water can be stopped, preventing continuous and wasteful supply of hot water.

(4) Capacity can be improved by keeping the auxiliary power source warm by leaving the mixing valve alone.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view of a hot water mixing device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional water supply device. DESCRIPTION OF SYMBOLS 11... Mixing valve, 19... Flow rate control valve, 22... Flow rate control valve motor (electric drive device), 23... Setting device, 26 ... Capacitor (auxiliary power supply), 27 ... Power supply. Name of agent: Patent attorney Toshio Nakao and 1 other person27
-Power supply diagram 2?

Claims (4)

[Claims] (1) A mixing valve that adjusts the mixing ratio of hot water and water, a flow control valve that adjusts the mixing flow rate, an electric drive means that drives this flow control valve, and an instruction to control the flow rate to this electric drive means. A hot water mixing device comprising a setting device, a power source, an auxiliary power source that supplies electricity in place of the power source when the power source is out of power, and a controller that controls closing of the flow rate control valve using the auxiliary power source when the power source is out of power. . (2) The hot water mixing device according to claim 1, wherein the auxiliary power source is a capacitor. (3) The hot water mixing device according to claim 1, which uses a motor as the electric drive means. (4) The hot water mixing device according to claim 3, wherein the mixing valve is electrically controlled.